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Unit pricing

Long Island deck building pricing per square foot

Deck Building cost per square foot in Long Island, New York in 2026.

Low

$5,700

Average

$10,400

High

$15,600

Long Island crews quote about $20 – $105 per square foot.

Multiply local unit rates by your real measurements.

What drives deck building prices in Long Island

Local labor, permitting and climate move Long Island prices away from the national average.

Labor market

Nassau and Suffolk crews are busy year round with premium suburban pricing.

Permits

Town-level permits vary widely and can be slow.

Climate

Coastal wind zones and nor easters affect roofing and siding.

Long Island unit pricing by material

Pressure-treated pine$20 – $46
Cedar$33 – $59
Redwood$39 – $65
Composite (Trex, TimberTech)$39 – $78
PVC / cellular vinyl$46 – $91
Tropical hardwood (ipe, cumaru)$52 – $105
Aluminum$59 – $115

Ways to lower your Long Island price

  • Keep the deck rectangular and under 200 sq ft where codes ease off.
  • Frame with pressure-treated lumber and spend only on the visible deck surface.
  • Build ground level — every foot of elevation adds framing, footings and railing.
  • Schedule in fall when builders discount to keep crews busy.
  • Skip fascia wraps and picture framing details that add labor with no structural value.

Long Island questions

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